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The DBA Oasis series binoculars have BaK-4 glass roof prisms put in the Schmidt-Pechan system. One side of the elements is phase correction coated, the other covered by a 64-layer Oasis coating, which task is to reflect 99% of the light and to enhance efficiently the transmission level of the whole instrument. The DBA Oasis series instruments include also aspherical lenses and a very comfortable eye relief, amounting to 18 mm. Read more >>>